GungHo Online and Taito have joined forces to bring us a special collaboration between Puzzle & Dragons and Groove Coaster Zero. Starting today, August 12th, players who open up Puzzle & Dragons are able to enjoy a Groove Coaster Zero-themed dungeon event that features monsters and aliens from the classic Space Invaders game. Also, those who play Groove Coaster Zero are able to enjoy the Puzzle & Dragons original soundtrack and a remixed version by Taito's sound team.